The Plan B One-Step is an emergency contraceptive pill used to help prevent pregnancy after unprotected sex or contraceptive failure (like a condom breaking).
How it works
- Contains levonorgestrel (a hormone)
- Works mainly by delaying or preventing ovulation
- It does NOT end an existing pregnancy
When to take it
- Best taken within 24 hours
- Can still work up to 72 hours (3 days) after sex
- The sooner you take it, the more effective it is
Effectiveness
- About 75–89% effective, depending on how quickly you take it
Common side effects
- Nausea or vomiting
- Fatigue
- Headache
- Breast tenderness
- Changes in your next period (earlier, later, heavier, or lighter)
Important notes
- It is not for regular birth control
- It does not protect against STIs
- If you vomit within 2 hours, you may need another dose
When to see a doctor
- If your period is more than a week late
- Severe abdominal pain (rare but important)
- You have repeated need for emergency contraception (you may want a regular method)
If you want, I can also explain:
- How it compares to other emergency pills
- Whether it’s available near you
- Or what to do next based on your situation 👍
